install_relocatable only installs files that exist

rapids-cmake/test/install_relocatable.cmake

@@ -103,12 +103,16 @@ function(rapids_test_install_relocatable)
 
   # We need to install the rapids-test gpu detector, and the json script we also need to write out /
   # install the new CTestTestfile.cmake
-  install(PROGRAMS "${PROJECT_BINARY_DIR}/rapids-cmake/${rapids_test_generate_exe_name}"
-          COMPONENT ${_RAPIDS_TEST_INSTALL_COMPONENT_SET} DESTINATION ${_RAPIDS_TEST_DESTINATION}
-          ${to_exclude})
-  install(FILES "${CMAKE_CURRENT_FUNCTION_LIST_DIR}/detail/run_gpu_test.cmake"
-          COMPONENT ${_RAPIDS_TEST_INSTALL_COMPONENT_SET} DESTINATION ${_RAPIDS_TEST_DESTINATION}
-          ${to_exclude})
+  if(EXISTS "${PROJECT_BINARY_DIR}/rapids-cmake/${rapids_test_generate_exe_name}")
+    install(PROGRAMS "${PROJECT_BINARY_DIR}/rapids-cmake/${rapids_test_generate_exe_name}"
+            COMPONENT ${_RAPIDS_TEST_INSTALL_COMPONENT_SET} DESTINATION ${_RAPIDS_TEST_DESTINATION}
+            ${to_exclude})
+  endif()
+  if(EXISTS "${CMAKE_CURRENT_FUNCTION_LIST_DIR}/detail/run_gpu_test.cmake")
+    install(FILES "${CMAKE_CURRENT_FUNCTION_LIST_DIR}/detail/run_gpu_test.cmake"
+            COMPONENT ${_RAPIDS_TEST_INSTALL_COMPONENT_SET} DESTINATION ${_RAPIDS_TEST_DESTINATION}
+            ${to_exclude})
+  endif()
   if(targets_to_install)
     install(TARGETS ${targets_to_install} COMPONENT ${_RAPIDS_TEST_INSTALL_COMPONENT_SET}
             DESTINATION ${_RAPIDS_TEST_DESTINATION} ${to_exclude})

testing/test/CMakeLists.txt

@@ -41,6 +41,7 @@ add_cmake_config_test(init-simple.cmake)
 set(wrong_component_message "No install component set [wrong_component] can be found")
 add_cmake_build_test(install_relocatable-include-in-all.cmake)
 add_cmake_build_test(install_relocatable-labels.cmake)
+add_cmake_build_test(install_relocatable-no-tests.cmake)
 add_cmake_config_test(install_relocatable-simple.cmake)
 add_cmake_config_test(install_relocatable-wrong-component.cmake SHOULD_FAIL "${wrong_component_message}")
 

testing/test/install_relocatable-no-tests.cmake

@@ -0,0 +1,40 @@
+#=============================================================================
+# Copyright (c) 2023, NVIDIA CORPORATION.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#=============================================================================
+include(${rapids-cmake-dir}/test/add.cmake)
+include(${rapids-cmake-dir}/test/install_relocatable.cmake)
+
+enable_language(CUDA)
+enable_testing()
+
+rapids_test_add(NAME verify_ COMMAND ls GPUS 1 INSTALL_COMPONENT_SET testing)
+rapids_test_install_relocatable(INSTALL_COMPONENT_SET testing
+                                DESTINATION bin/testing)
+
+file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/verify_cmake_install.cmake"
+"set(install_rules_file \"${CMAKE_CURRENT_BINARY_DIR}/cmake_install.cmake\")")
+
+file(APPEND "${CMAKE_CURRENT_BINARY_DIR}/verify_cmake_install.cmake"
+[=[
+
+file(READ "${install_rules_file}" contents)
+set(bad_install_rule_match_string [===[rapids-cmake/generate_ctest_json")]===])
+string(FIND "${contents}" ${bad_install_rule_match_string} is_found)
+if(NOT is_found EQUAL -1)
+  message(FATAL_ERROR "`rapids_test_install_relocatable` trying to install files that don't exist")
+endif()
+]=])
+add_custom_target(verify_install_files_valid ALL
+  COMMAND ${CMAKE_COMMAND} -P "${CMAKE_CURRENT_BINARY_DIR}/verify_cmake_install.cmake")